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公开(公告)号：US20230043317A1
公开(公告)日：2023-02-09
申请号：US17815331
申请日：2022-07-27
申请人： Hirotaka YOKOTA , Shusuke Okada , Kenta Takagi
发明人： Hirotaka YOKOTA , Shusuke Okada , Kenta Takagi
摘要： A Sm—Fe—N magnet includes Sm—Fe—N particles each having a surface, a coating layer being provided on at least a portion of the surface or on at least a portion of an interface between at least two of the Sm—Fe—N particles, or being provided on both, wherein the coating layer includes a first layer and a second layer, the first layer being situated closer to the surface or the interface than is the second layer, he first layer includes α-Fe, the second layer includes a Sm—Fe—Zn alloy, and a Zn content contained in the second layer is 1 at % or more and 20 at % or less.
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公开(公告)号：US20230039058A1
公开(公告)日：2023-02-09
申请号：US17815342
申请日：2022-07-27
申请人： Hirotaka YOKOTA , Eiichiro Fukuchi , Shusuke Okada , Kenta Takagi
发明人： Hirotaka YOKOTA , Eiichiro Fukuchi , Shusuke Okada , Kenta Takagi
摘要： A Sm—Fe—N magnet includes Sm—Fe—N particles, wherein an inter-particle metal phase is present between at least two of the Sm—Fe—N particles, an average particle diameter of the Sm—Fe—N particles is less than 2.0 μm, and a percentage of the Sm—Fe—N particles having an aspect ratio of 2.0 or more is 10% or less, the inter-particle metal phase includes a Fe3Zn10 phase and an α-Fe phase in a particle form, and in the inter-particle metal phase, an area ratio of the Fe3Zn10 phase is 80% or more.
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公开(公告)号：US11361888B2
公开(公告)日：2022-06-14
申请号：US16615511
申请日：2018-05-29
摘要： One embodiment of the present invention is that in samarium-iron-nitrogen magnet powder, a non-magnetic phase is formed on a surface of the samarium-iron-nitrogen magnet phase, and an arithmetic mean roughness Ra of the surface is 3.5 nm or less.
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公开(公告)号：US11798739B2
公开(公告)日：2023-10-24
申请号：US17042443
申请日：2019-03-27
申请人： Ryuji Hashimoto , Yasushi Enokido , Shusuke Okada , Kenta Takagi
发明人： Ryuji Hashimoto , Yasushi Enokido , Shusuke Okada , Kenta Takagi
CPC分类号： H01F41/0266 , B22F1/00 , H01F1/059 , H01F41/02 , B22F10/32
摘要： One embodiment of the present invention includes, in a samarium-iron-nitrogen based magnet powder, a main phase containing samarium and iron, and a sub-phase containing samarium, iron, and at least one or more elements selected from the group consisting of zirconium, molybdenum, vanadium, tungsten, and titanium, wherein an atomic ratio of a rare earth element to an iron group element is greater than an atomic ratio of the rare earth element to the iron group element of the main phase, wherein at least a part of a surface of the main phase is coated with the sub-phase.
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公开(公告)号：US11453057B2
公开(公告)日：2022-09-27
申请号：US16081299
申请日：2017-02-28
摘要： A samarium-iron-nitrogen alloy powder according to one embodiment of the present invention is characterized in that a value obtained by dividing the hydrogen content of the samarium-iron-nitrogen alloy powder by the BET specific surface area of the samarium-iron-nitrogen alloy powder is less than or equal to 400 ppm/(m2/g), and a value obtained by dividing the oxygen content of the samarium-iron-nitrogen alloy powder by the BET specific surface area of the samarium-iron-nitrogen alloy powder is less than or equal to 11,000 ppm/(m2/g).
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6.发明授权公开(公告)号：US09455389B2
公开(公告)日：2016-09-27
申请号：US13678635
申请日：2012-11-16
申请人： Yasuhiro Kawaguchi , Hideo Yumi , Hiroki Kitano , Kenta Takagi , Kimihiro Ozaki
发明人： Yasuhiro Kawaguchi , Hideo Yumi , Hiroki Kitano , Kenta Takagi , Kimihiro Ozaki
摘要： In a thermoelectric conversion module, each of a p-type element and an n-type element is configured by aligning a plurality of particles in series and connecting the particles to each other. Around a connection part in which the particles are connected to each other, a protrusion is protruded. The protrusion has a shape of continuously extending around the entire periphery of the connection part. The protrusion may be partly interrupted, but in such a case, a circumferential length of one interrupted portion is less than one half of the periphery of the connection part.
摘要翻译： 在热电转换模块中，p型元件和n型元件通过将多个粒子串联并将粒子彼此连接而构成。 在其中颗粒彼此连接的连接部分周围，突出部突出。 该突起部具有连续部的周围连续延伸的形状。 突起可以部分地中断，但是在这种情况下，一个中断部分的圆周长度小于连接部分周边的一半。
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公开(公告)号：US20060093306A1
公开(公告)日：2006-05-04
申请号：US11255964
申请日：2005-10-24
申请人： Akira Kawasaki , Kenta Takagi
发明人： Akira Kawasaki , Kenta Takagi
IPC分类号： G02B6/00
CPC分类号： G02B6/1225 , B82Y20/00
摘要： A three-dimensional photonic crystal having a wide and sharp bandgap, a manufacturing method thereof, a structural body for manufacturing this photonic crystal, and a manufacturing method thereof are provided. The structural body is formed by placing monodisperse particles in a recess having a regular quadrangular pyramid shape formed in a container, arranging the particles three-dimensionally by applying vibration, and performing sintering, so that adjacent particles are connected to each other with necks provided therebetween. A dielectric resin is impregnated in voids of the structural body and is then cured to form a composite. The composite is immersed in a solution which dissolves only the structural body. Monodisperse particles exposed at the surface of the composite are dissolved, and monodisperse particles adjacent thereto with necks provided therebetween are then sequentially dissolved, so that the whole structural body is finally dissolved. Hence, a photonic crystal composed of the dielectric resin is manufactured.
摘要翻译： 提供了具有宽而尖锐带隙的三维光子晶体及其制造方法，其制造方法，制造该光子晶体的结构体及其制造方法。 结构体通过将单分散颗粒放置在形成于容器中的具有规则四边形棱锥形状的凹槽中而形成，通过施加振动来三维地布置颗粒，并进行烧结，使得相邻的颗粒彼此连接，并设置有颈部 。 将电介质树脂浸渍在结构体的空隙中，然后固化以形成复合材料。 将复合材料浸入仅溶解结构体的溶液中。 溶解在复合体表面露出的单分散粒子，然后在其间设置有颈部的与其相邻的单分散粒子依次溶解，使整个结构体最终溶解。 因此，制造由电介质树脂构成的光子晶体。
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